We read 12 results from West Hempstead WD’s 2025 water quality report. No results over a legal limit; 5 above a health goal or guideline.
Serves about 32,031 people · Water system ID NY2902857 · Read the district’s 2025 report (opens in a new tab)
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Results from the 2025 report
Each number is copied from the district’s report and links to the page it’s printed on. Where the report lists several plants, wells or purchased water, the highest is shown.
| Contaminant | Result | Health goal | Legal limit | What it means |
|---|---|---|---|---|
| Arsenichighest measured · range ND to 1.2 · listed as a violation in the report · Wells · 2025 report, page 3 | 1.2 ppb | 0.004 ppb | 10 ppb | Above the health goal300x the health goal |
| Gross beta (radioactivity)highest measured · range 0.32 to 1.71 · listed as a violation in the report · Wells · 2025 report, page 3 | 1.71 pCi/L | 0 pCi/L | 50 pCi/L | Above the health goalThe health goal is zero |
| Lead90th percentile of 30 homes tested · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 3 | 1.1 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal5.5x the health goal |
| PFOA (a PFAS)highest measured · range ND to 3.19 · listed as a violation in the report · Wells · 2025 report, page 3 | 3.19 ppt | 0.007 ppt | 10 ppt (New York) now; 4 ppt from 2029 | Above the health goal456x the health goal |
| Radium (combined 226 + 228)highest measured · range 0.05 to 0.92 · listed as a violation in the report · Wells · 2025 report, page 3 | 0.92 pCi/L | 0 pCi/L | 5 pCi/L | Above the health goalThe health goal is zero |
| Chloridehighest measured · range 13.8 to 19.4 · listed as a violation in the report · Wells · 2025 report, page 3 | 19.4 ppm | — | 250 ppm guideline | Within the guideline |
| Chlorinehighest measured · range 0.32 to 1.65 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 1.65 ppm | None set | 4 ppm | Below the legal limit |
| Copper90th percentile of 30 homes tested · listed as a violation in the report · sampled 2023 · Customer taps · 2025 report, page 3 | 0.24 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (TTHM)highest measured · range ND to 2.6 · listed as a violation in the report · Distribution system · 2025 report, page 3 | 2.6 ppb | None set | 80 ppb | Below the legal limit |
| Nitrate (as N)highest measured · range ND to 1.3 · listed as a violation in the report · Wells · 2025 report, page 3 | 1.3 ppm | 10 ppm | 10 ppm | Below the health goal |
| Sulfatehighest measured · range 13.3 to 18.8 · listed as a violation in the report · Wells · 2025 report, page 3 | 18.8 ppm | — | 250 ppm guideline | Within the guideline |
| Sodiumhighest measured · range 6.2 to 27.3 · listed as a violation in the report · Wells · 2025 report, page 3 | 27.3 ppm | None set | None | No health limit |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper.
What you can do
Nothing here is an emergency notice: if the district has a violation, it must tell customers directly. If you’d like to lower these at your tap, these are the treatments that remove them, and the catalog shows the models certified for each. Ranking is by certified removal; commissions never change the order.
Radium and uranium
Found: Gross beta (radioactivity), Radium (combined 226 + 228)
What removes it: Reverse osmosis.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
PFAS ("forever chemicals")
Found: PFOA (a PFAS)
What removes it: Reverse osmosis.
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